Elsevier

Preventive Medicine

Volume 32, Issue 5, May 2001, Pages 437-445
Preventive Medicine

Regular Article
Hazard of Smoking Initiation by Age among Adolescents in Wuhan, China

https://doi.org/10.1006/pmed.2001.0826Get rights and content

Abstract

Background. Knowledge about age of smoking initiation among adolescents in China is helpful for exploring cultural differences in adolescent smoking behavior and informative for global tobacco control. However, little has been documented on this issue.

Method. Adolescents (6,473) attending grades 7, 8, and 9 completed the baseline survey of a longitudinal, randomized smoking prevention trial. Data were collected in classrooms with a paper-and-pencil questionnaire. A survival model was used in the statistical analysis.

Results. The hazard of smoking initiation for boys showed a pattern previously observed in the United States: very low (<2%) before 7 years of age, increasing rapidly after age 10, and peaking at 14–15 years of age. The hazard for girls was below or around 1% until 12 years of age before it increased. The hazard levels were similar for adolescents both in urban and in rural areas, but higher for those in grade 7 than in grades 8 and 9.

Conclusions. Chinese boys in Wuhan, China, experienced a hazard pattern of smoking initiation by age similar to those observed in the United States, while Chinese girls there experienced a rather low risk of smoking initiation. The hazard pattern suggests that the best time for smoking prevention is between 10 and 15 years of age. Adolescents in lower grades are at higher risk of early smoking initiation, suggesting a potential cohort effect in adolescent smoking initiation in Wuhan, China.

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    This study was supported by the Transdisciplinary Tobacco Research Center, a NIH-funded grant (Award P 150 CA84735-01), and the Wuhan Public Health Bureau, China.

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    To whom reprint requests should be addressed at the Institute for Health Promotion and Disease Prevention Research, University of Southern California School of Medicine, 1540 Alcazar Street, CHP 206, Los Angeles, CA 90089-9008. Fax: (626) 457-4012. E-mail: [email protected].

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